technical progress bring can't make up the increment value of throw in th funds, so this kind of technical improvement have no realistic meaning Therefore, we choose to use the co mpre hensive evaluation index sign. Hot economics index sign. The hot economics is to combine the analytical and economic factor of thermodynamics of cross the course. The found ation of that course is the thermody namics foundation and the economics foundations, and can make use of the modern expertly superior turn the technique, in this text, I will combine the hot economic s cost of actual calculatio n unit, passing to set up the mold, experiment, comp uting hot economics unit price cost of a that equipment2 t echnica l p rog res s b ring can' t mak e up t he inc rem ent va lue of t hrow i n t he funds, so this kind of techni cal improvem ent hav e no reali st i c meani ng. The ref ore, w e c hoose t o u se t he co mpre hens ive eva luat io n ind ex s ign . H ot econom ic s ind ex sign . The hot econ om ics is t o comb ine t he anal yt ica l and econom ic f act or of t her mod ynam ics of cro ss t he cou rse. The f ound at ion of that course is the thermod ynam ic s foundat io n and the econom i cs foundat io ns, and can make use of the modern expert l y superi or turn the techni que, in this text, I will combi ne the hot econom ic s cost of actual calcul at io n unit, passing to set up the mold , experi ment , comp ut i ng hot economi cs unit price cost of a that equipm ent